27768725707 has 4 divisors (see below), whose sum is σ = 28028246616. Its totient is φ = 27509204800.

The previous prime is 27768725693. The next prime is 27768725741. The reversal of 27768725707 is 70752786772.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27768725707 is a prime.

It is a super-2 number, since 2×27768725707² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27768725767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129760294 + ... + 129760507.

It is an arithmetic number, because the mean of its divisors is an integer number (7007061654).

Almost surely, 2^27768725707 is an apocalyptic number.

27768725707 is a deficient number, since it is larger than the sum of its proper divisors (259520909).

27768725707 is a wasteful number, since it uses less digits than its factorization.

27768725707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259520908.

The product of its (nonzero) digits is 16134720, while the sum is 58.

The spelling of 27768725707 in words is "twenty-seven billion, seven hundred sixty-eight million, seven hundred twenty-five thousand, seven hundred seven".